Intel® Agilex™ Configuration User Guide

ID 683673
Date 7/05/2022
Public

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2.5.3.1.1. nCONFIG

The nCONFIG pin is a dedicated, input pin of the SDM. nCONFIG has two functions:
  • Hold-off initial configuration
  • Initiate FPGA reconfiguration
The nCONFIG pin transition from low to high signals a configuration or reconfiguration request. The nSTATUS pin indicates device readiness to initiate FPGA configuration.

The configuration source can only change the state of the nCONFIG pin when it has the same value as nSTATUS. When the Intel® Agilex™ device is ready it drives nSTATUS to follow nCONFIG.

The host should drive nCONFIG low to initiate device cleaning. Then the host should drive nCONFIG high to initiate configuration. If the host drives nCONFIG low during a configuration cycle, that configuration cycle stops. The SDM expects a new configuration cycle to begin.

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